Antifriction draw-bar support



A. C. DAVIDSON.

ANTIFRICTION DRAW BAR SUPPORT.

APPLICATION FILED APR. I2, 1916- Patented J 11116 8, 1920.

ARTHUR C. DAVEDSON, F CHICAGU, ILLINOIS, ASSIGNOR T0 WAUGH DRAFT GEARC0137 PANY, OF CHICAGO, ILLINOIS, .A. CORPORATIGN (2F ILLINQIS.

ANTIFRICTIGN DRAW-BAR SULPIFGBT.

Specification of Letters Patent.

Patented June d, i fitlt lpplication filed April 12, 1916. Serial No.90,559.

of the city of Chicago, in the county of Cook 7 and State of Illinois,have invented certain new and useful Improvements in AntifrictionDraw-Bar Supports; and I do hereby declare that the following is a full,clear, and exact description of the same, reference being had to theaccompanying drawings,

and to the numerals of reference marked thereon, which form a part ofthis specification.

One of the sources of almost constant at tention in the maintenance ofrolling stock isthe wear of the drawbar upon'the guiding or supporting'means provided therefor. This is occasioned-by the continuouslongitudinal movement of the drawbar when a car is in motion, due to themovement of the parts of the draft gears of the coupled cars. The wearbetween the drawbar and its sup port is due to the-fact that a slidingmovement is permitted to take place between the parts, and this ofcourse, due to the fact that such movement takes place, almostcontinuously when a car is in use, soon causes a serious amount of wearto take place. By

my invention a rocking contact is provided for the drawbar upon meanswhich support the same in proper horizontal position for coupling, thusobviating, to a large extent,

wear upon the parts.

, it is an object therefore of this invention to construct a drawbarsupporting mechanism comprising movable means capable of rocking contactwith the drawbar to support the same inproper position on the car andpermittin longitudinal movement of the drawbar to take place withoutundue wear upon the parts. 4

is also an object of this invention to construct a drawbar supportingmeans adapted to be rigidly connected the sills of a car, affording arocking contact for support of the drawbar and maintaining the sameproperly positionedin all adjustments, due to movement of the parts ofthe draft gear.

is furthermore an object of this inven-' tion to provide adrawbarsupporting mechanism comprising a casing adapted to be rigidly attachedupon the sills or a car, and

having mounted therein a rocker upon whichv the drawbar meltslongitudinal movement whereby the drawbar is supported in properposition. in all adjusting movements thereof.

It is finally an object of this invention to construct a device simplein operation and construction and operating eliiciently to perform thepurpose.

The invention (ina preferred form) is illustrated in the drawings andhereinafter more fully described.

In the drawings:

Figure 1 is a fragmentary detail view illustrating a device embodyingtheprinciples of my invention in section, and showing the samesupporting the drawbar on a car.

Fig. 2 is an enlarged .sectional detail of the device similar to theillustration thereof in Fig. 1.

Fig. 3 is a top plan view of the device, with the drawbar broken awayand the sills of the car shown in section.

Fig. 4: is a detail view taken on line l-% of Fig. 3, with parts insection.

Fig. 5 is a section taken on line 5--5 of Fig. 3.

As shown in the drawings:

' whole the end of a car of any conventional type, and provided, asshown in Fig. 3, with longitudinal center sills 2, the lower flanges 3,of which are tapered toward the forward end of the sills. The drawbar isdenoted as a whole by the reference numeral 4, and is provided on itsouter forward end with a coupler head or drawhead 5.

The device embodying the principles of my invention is attached upon thecenter sills Q, and consists of a heavy casting 6, provided withintegral hooked bracket arms or webs 7, on each side at the rearthereof, which, as clearly shown in Figs. 3 and 5, are

wedgingly engaged over the outer flanges 3, I

of the sills in interfitting relation therewith. At the forward end ofthe casing or casting ii, a tubular or cylmdrical portion 8, is

formed extending transversely thereacross,

Within the casing or casting 6, which is Mill cbred out for the purpose,is disposed a rocker 11, which consists of an I-beam seccylindricalsector 11, is provided with vertical ribs or webs 14, disposed at rightangles thereto to reinforce thesame. The interior of the. casting orcasing 6, is provided with a hardened horizontal partition or hearingfloor 15, upon which the lower surface 13, of the rocker rocks, andrecesses 16, are provided through said bearing floor to permit outlettherethrough of any foreign matter which may find entrance into thecasting at the upper end.

The operation is thought to be obvious from the description. However,longitudinal movement of the drawbar 4, due to movement of the elementsof the draft gear on which the same is connected in the usual manner, isallowed to take place, due to the fact thatthe drawbar rocks upon therocker 11, which in turn rocks upon the floor 15, within the casting orcasing 6. The con- 'struction is extremely simple, the rocker merelybeing inserted into the. casting provided therefor. No auxiliaryretaining means are necessary to hold the rocker in place, the weight ofthe drawbar resting thereon on the upper surface thereof insuringretention thereof in the casing at all times. The casing is attachedupon the centersills of the car in an easy manner facilitating readyremoval or attachment thereof, the bracket members 7, merely beingwedged into engagement with the bottom flanges 3,

of the sills, by movement of the device rearwardly thereon and the bolt9, is inserted through the registering apertures provided in the sillsand the cylindrical forward portion of the casing to lock theusanie inplace. ---lhe rocker element 11, is so constructed the same actsnormally to tend to move to a centered or upright position, such asshown in full lines in Figs. 1 and 2.

l are aware that various details of construction may be varied through awide range departing from the principles this invention, and l thereforedo not purpose limiting the patent granted otherwise than necessitatedby the prior claim as my invention:

1. in a device of the class described, the combination with a car anddrawbar, of means for supporting the drawbar in proper relation with thecar comprising a casting, means integrally formed on the front and sidesthereof adapted to rigidly secure said casting to the car, and meansmounted within said casting upon which the drawbaris movably supported.

2.. ln a device of the class described supporting a drawbar the caestates casting adapted to be rigidly secured to the car, and an I-beamrocker mounted transversely within said casting extending transi verselybeneath the drawbar, said rocker having curved upper and lower surfaces7 permitting the drawbar to rock thereon while supported insubstantially the same horizontal plane.

3. attachment on a car to support a drawbar to permit longitudinalmovement thereof, a casting, hooked means thereon to engage over thelower flanges of the sills of the car,

mechanism interlocking the casting with the sills of the car to holdthe' same rigidly locked and thereby supported therefrom, and meansdisposed within said casting adapted to support the drawbar thereon.

4. In a drawbar support of the class de scribed the combination with acar and drawbar, of a casing adapted to be secured to the sills of thecar, and an I-beam rocker disposed therein to movably support the In adeviceof the classdescribed for 8. lln a device of the class described aca ing and an I beammember loosely supported thereon to rock back andforth withthe draw bar supported thereon.

9. In a device of the class described, the combination of an uprighttilting member adapted to swing from side to side, and provided with alongitudinal bearing at the top and a longitudinal hearing at the bottomthereof, a draw-bar extending transversely across the upper edge of thetilting member and supported thereby, and supporting ovided with alongitudinal hearing part engaging the lower edge of the tilting member,said supporting means shaped limit the swing of said tilting "iembe l ia device of the class described, the

combination of an upright tilting member to lean from side to side, asupport provided with a longitudinal bearing engaging the lower end ofthe tilting member, adrawbar resting on and extending trans- Mill "mil

versely across the upper edge of the tilting its member, iacent the berthereof,

support embracingmeans adper edge of the tilting memlimiting the tiltingmovement l1, the class described, the lit combination of a recessedsupport, an upright oscillating member mounted in'the recess of thesupport, the said support being provided with V shaped means suitablyspaced at the base of the recess and expanded at the top thereof tolimit the oscillation of the oscillating member.

12. In a device of the class described, the combination of a supportprovided with a longitudinal recess, an oscillating member provided witha longitudinal bearing edge engaging the recess, the said support beingprovided with confining means at the base of the recess adapted toengage the lower portion of the oscillating member and being providedwith expanded portions adjacent the top of the oscillating member forlimiting the oscillation thereof, and a drawbar supported by theoscillating member.

' 13. In a draw-bar support, the combination of a supporting memberhaving a longitudinal V-- shaped groove, an oscillating member havingthe lower edge thereof seated in the groove and the upper edge thereofprojecting above the walls of the groove, and a draw-bar supported onthe upper edge of. the oscillating member.

14. In a device of the class described, the combination of a standarddraw-bar having a flat lower bearing surface, of an oscillating memberengaging the fiat lower bearing surface of the drawbar, a supportingmeans extending axially across under the said oscillating member, andmeans at each side of the oscillating member for limiting theoscillation thereof.

. In testimony whereof I have hereunto subscribed my name in thepresence of two subscribing witnesses.

ARTHUR C. DAVIDSON.

Witnesses CHARLES W. HILLs, J12, EARL M. HARDINE.

